Paper

Cherenkov and scintillation light separation in BGO and BSO crystals coupled to SiPMs for dual-readout electromagnetic calorimetry at future colliders

Favilla, L, Lucchini, M T, D'Avanzo, A, Auffray, E, Benaglia, A, D'Onofrio, A, Borriello, L, Perna, S, Izzo, V, Manoni, E, Argiento, B, Iorio, A O M, Bisignani, V, C Di Fraia, Gaudino, G, Conventi, F, Scamardella, J, Francesconi, M, Delenne, J, Cirotto, F, Cecchi, C, Mirra, M, Alviggi, M, De Nardo, G, Rossi, E, Boccanfuso, D, Rossi, B, Campajola, M, Moneta, S, Paolucci, P, Sekhniaidze, G

2026

Overview

We report on the separation of Cherenkov and scintillation light in BGO and BSO crystals read out with silicon photomultipliers (SiPMs). The two light components are disentangled on an event-by-event basis by combining optical filtering with waveform template fitting, exploiting their distinct spectral and temporal characteristics. Measurements were carried out using high-energy muon and positron beams at the CERN SPS North Area, demonstrating Cherenkov yields of up to \\(\\)150 ph.e./GeV in electromagnetic showers. This work provides the first demonstration of Cherenkov-scintillation separation in BGO and BSO crystals with SiPM readout, supporting the use of this technology as a building block for a dual-readout electromagnetic calorimeter, as foreseen in the IDEA detector concept for a future \\(e^+e^-\\) Higgs factory.

• Publisher: Cornell University Library, arXiv.org
• Subject: BGO (crystal) / Crystals / Higgs bosons / Particle accelerators / Particle beams / Photomultiplier tubes / Positron beams / Scintillation / Separation / Waveforms